*{
    margin:0;
    padding:0;
    list-style: none;
    text-decoration: none;
}
header{
    height:40px;
    line-height: 40px;
    background: black;
    color:white;
    nav{
        width:90%;
        margin:0 auto;
        a{
            padding:5px 15px;
            background: crimson;
            color:white;
        }
    }
}
main{
    width:90%;
    margin:0 auto;
    background: cornsilk;
    height:400px;
    article{
        @media only screen and (min-width:800px){
            width:60%;
        }
        @media only screen and (max-width:799px) and (min-width:400px){
            width:100%;
        }
        width:60%;
        background: chartreuse;
        height:400px;
        float:left;
        
    }
    aside{
        width:35%;
        background: chocolate;
        height:400px;
        float:right;
        @media only screen and (min-width:800px){
            display: block;
        }
        @media only screen and (max-width:799px) and (min-width:400px){
            display: none;
        }
    }
}
footer{
    height:60px;
    background: black;
    line-height: 60px;
    text-align: center;
    color:white;
}
